In the pharmaceutical industry, sterilization is a critical process for ensuring the safety and efficacy of drug products. Commonly used sterilization methods include thermal sterilization, radiation sterilization, chemical sterilization, and filtration sterilization. For certain biological products, operation at ambient temperature is required to preserve drug activity, making ambient filtration sterilization the optimal choice. A comparison of different sterilization technologies is presented below:
Ambient sterile filtration membrane technology combines two layers of polyethersulfone (PES) membrane. The membrane structure features a loose upper layer and a tighter lower layer; both layers are asymmetric in structure, together forming a multi-zone filtration membrane that enhances dirt-holding capacity while maintaining high flow rates and sterilization performance. Microstructure images of the membrane are shown below:
The ambient sterile filtration membrane employs advanced pleating technology, ensuring that the sterile filter cartridge delivers high flow rates and high loading capacity. Additionally, the absolute rated sterile filter membrane has passed bacterial challenge testing, guaranteeing sterilization efficacy. The hydrophilically modified polyethersulfone material is easily wetted, facilitating integrity testing for users. Moreover, the membrane material exhibits very low protein adsorption, which enhances the yield of target proteins.
Pleating technology optimizes the filter structure by increasing the effective membrane filtration area, thereby achieving higher flow rates, shorter filtration times, reduced membrane usage, and extended membrane service life.
In the pharmaceutical industry, high-temperature sterilization and exposure to acidic or alkaline environments are common. Sterile filter membranes must maintain their integrity under these conditions. Heat resistance and chemical compatibility test results are presented below:
The ambient sterile filtration membrane offers the following advantages:
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Double-layer filtration medium for high dirt-holding capacity
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Low product adsorption
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High membrane mechanical strength
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Advanced pleating technology for large membrane area
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Broad chemical compatibility
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Long membrane service life
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Beyond the pharmaceutical field, ambient filtration sterilization technology can also be applied in other temperature sensitive sterilization applications, such as tea beverages, alcoholic beverages, fruit juices, and similar products.
Since its establishment, Guochu Technology (Xiamen) Co., Ltd. has been committed to membrane separation technology as its core, dedicated to promoting novel separation technologies. The company continuously explores new applications of advanced membrane separation technologies in fields such as biopharmaceuticals, power, chemicals, microelectronics, metallurgy, machinery, food, dairy, beverages, and the environment. By addressing the highly differentiated needs of various clients, Guochu Technology provides targeted integrated solutions for filtration and purification, improving product quality and meeting customer requirements.
